Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.HashMap;

public class Main {
    public static void main(String[] args) {
        HashMap<String, String> hMap = new HashMap<String, String>();

        hMap.put("1", "One");
        hMap.put("2", "Two");
        hMap.put("3", "Three");

        boolean blnExists = hMap.containsKey("3");
        System.out.println("3 exists in HashMap ? : " + blnExists);
    }
}